When I first saw this demo'd, my immediate thought was that ok, it's some sort of gaffed deck... let
me figure out exactly what it is. Naturally, I felt foolish when I discovered that there was no
gaff at all. The two decks of cards are completely normal.
The basis for the effect is a
brilliantly deceptive force that is undetectable... plus a routine built around it that is
excellent. This is so easy to do, and yet it is so baffling to the spectator. You end completely
clean, and both decks are completely examinable. What more could you possibly want in an effect?